Add 81/27 and 70/56
1st number: 3 0/27, 2nd number: 1 14/56
81/27 + 70/56 is 17/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 56 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 27 × 56 = 1512,
81/27 = 81 × 56/27 × 56 = 4536/1512 - Likewise, for the 2nd fraction, since 56 × 27 = 1512,
70/56 = 70 × 27/56 × 27 = 1890/1512 - Add the two like fractions:
4536/1512 + 1890/1512 = 4536 + 1890/1512 = 6426/1512 - 6426/1512 simplified gives 17/4
- So, 81/27 + 70/56 = 17/4
In mixed form: 41/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/54+70/56